Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.cpp @ 13041:04df110c8655
Merge
author | mgronlun |
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date | Sat, 02 Nov 2013 20:56:18 +0100 |
parents | 662c154d2749 |
children | fce21ac5968d |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
6934 | 26 #include "classfile/defaultMethods.hpp" |
1972 | 27 #include "classfile/systemDictionary.hpp" |
28 #include "classfile/vmSymbols.hpp" | |
29 #include "compiler/compileBroker.hpp" | |
30 #include "gc_interface/collectedHeap.inline.hpp" | |
31 #include "interpreter/bytecode.hpp" | |
32 #include "interpreter/interpreterRuntime.hpp" | |
33 #include "interpreter/linkResolver.hpp" | |
34 #include "memory/resourceArea.hpp" | |
35 #include "memory/universe.inline.hpp" | |
36 #include "oops/instanceKlass.hpp" | |
37 #include "oops/objArrayOop.hpp" | |
38 #include "prims/methodHandles.hpp" | |
39 #include "prims/nativeLookup.hpp" | |
40 #include "runtime/compilationPolicy.hpp" | |
41 #include "runtime/fieldDescriptor.hpp" | |
42 #include "runtime/frame.inline.hpp" | |
43 #include "runtime/handles.inline.hpp" | |
44 #include "runtime/reflection.hpp" | |
45 #include "runtime/signature.hpp" | |
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46 #include "runtime/thread.inline.hpp" |
1972 | 47 #include "runtime/vmThread.hpp" |
0 | 48 |
49 | |
50 //------------------------------------------------------------------------------------------------------------------------ | |
51 // Implementation of CallInfo | |
52 | |
53 | |
54 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { | |
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55 int vtable_index = Method::nonvirtual_vtable_index; |
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56 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
0 | 57 } |
58 | |
59 | |
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60 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int itable_index, TRAPS) { |
0 | 61 // This is only called for interface methods. If the resolved_method |
62 // comes from java/lang/Object, it can be the subject of a virtual call, so | |
63 // we should pick the vtable index from the resolved method. | |
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64 // In that case, the caller must call set_virtual instead of set_interface. |
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65 assert(resolved_method->method_holder()->is_interface(), ""); |
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66 assert(itable_index == resolved_method()->itable_index(), ""); |
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67 set_common(resolved_klass, selected_klass, resolved_method, selected_method, CallInfo::itable_call, itable_index, CHECK); |
0 | 68 } |
69 | |
70 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
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71 assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index, "valid index"); |
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72 assert(vtable_index < 0 || !resolved_method->has_vtable_index() || vtable_index == resolved_method->vtable_index(), ""); |
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73 CallKind kind = (vtable_index >= 0 && !resolved_method->can_be_statically_bound() ? CallInfo::vtable_call : CallInfo::direct_call); |
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74 set_common(resolved_klass, selected_klass, resolved_method, selected_method, kind, vtable_index, CHECK); |
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75 assert(!resolved_method->is_compiled_lambda_form(), "these must be handled via an invokehandle call"); |
0 | 76 } |
77 | |
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78 void CallInfo::set_handle(methodHandle resolved_method, Handle resolved_appendix, Handle resolved_method_type, TRAPS) { |
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79 if (resolved_method.is_null()) { |
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80 THROW_MSG(vmSymbols::java_lang_InternalError(), "resolved method is null"); |
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81 } |
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82 KlassHandle resolved_klass = SystemDictionary::MethodHandle_klass(); |
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83 assert(resolved_method->intrinsic_id() == vmIntrinsics::_invokeBasic || |
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84 resolved_method->is_compiled_lambda_form(), |
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85 "linkMethod must return one of these"); |
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86 int vtable_index = Method::nonvirtual_vtable_index; |
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87 assert(!resolved_method->has_vtable_index(), ""); |
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88 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
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89 _resolved_appendix = resolved_appendix; |
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90 _resolved_method_type = resolved_method_type; |
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91 } |
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92 |
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93 void CallInfo::set_common(KlassHandle resolved_klass, |
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94 KlassHandle selected_klass, |
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95 methodHandle resolved_method, |
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96 methodHandle selected_method, |
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97 CallKind kind, |
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98 int index, |
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99 TRAPS) { |
0 | 100 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); |
101 _resolved_klass = resolved_klass; | |
102 _selected_klass = selected_klass; | |
103 _resolved_method = resolved_method; | |
104 _selected_method = selected_method; | |
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105 _call_kind = kind; |
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106 _call_index = index; |
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107 _resolved_appendix = Handle(); |
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108 DEBUG_ONLY(verify()); // verify before making side effects |
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109 |
1783 | 110 if (CompilationPolicy::must_be_compiled(selected_method)) { |
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111 // This path is unusual, mostly used by the '-Xcomp' stress test mode. |
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112 |
1783 | 113 // Note: with several active threads, the must_be_compiled may be true |
114 // while can_be_compiled is false; remove assert | |
115 // assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile"); | |
0 | 116 if (THREAD->is_Compiler_thread()) { |
117 // don't force compilation, resolve was on behalf of compiler | |
118 return; | |
119 } | |
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120 if (selected_method->method_holder()->is_not_initialized()) { |
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121 // 'is_not_initialized' means not only '!is_initialized', but also that |
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122 // initialization has not been started yet ('!being_initialized') |
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123 // Do not force compilation of methods in uninitialized classes. |
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124 // Note that doing this would throw an assert later, |
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125 // in CompileBroker::compile_method. |
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126 // We sometimes use the link resolver to do reflective lookups |
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127 // even before classes are initialized. |
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128 return; |
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129 } |
0 | 130 CompileBroker::compile_method(selected_method, InvocationEntryBci, |
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131 CompilationPolicy::policy()->initial_compile_level(), |
1783 | 132 methodHandle(), 0, "must_be_compiled", CHECK); |
0 | 133 } |
134 } | |
135 | |
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136 // utility query for unreflecting a method |
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137 CallInfo::CallInfo(Method* resolved_method, Klass* resolved_klass) { |
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138 Klass* resolved_method_holder = resolved_method->method_holder(); |
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139 if (resolved_klass == NULL) { // 2nd argument defaults to holder of 1st |
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140 resolved_klass = resolved_method_holder; |
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141 } |
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142 _resolved_klass = resolved_klass; |
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143 _selected_klass = resolved_klass; |
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144 _resolved_method = resolved_method; |
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145 _selected_method = resolved_method; |
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146 // classify: |
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147 CallKind kind = CallInfo::unknown_kind; |
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148 int index = resolved_method->vtable_index(); |
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149 if (resolved_method->can_be_statically_bound()) { |
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150 kind = CallInfo::direct_call; |
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151 } else if (!resolved_method_holder->is_interface()) { |
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152 // Could be an Object method inherited into an interface, but still a vtable call. |
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153 kind = CallInfo::vtable_call; |
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154 } else if (!resolved_klass->is_interface()) { |
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155 // A miranda method. Compute the vtable index. |
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156 ResourceMark rm; |
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157 klassVtable* vt = InstanceKlass::cast(resolved_klass)->vtable(); |
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158 index = vt->index_of_miranda(resolved_method->name(), |
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159 resolved_method->signature()); |
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160 kind = CallInfo::vtable_call; |
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161 } else if (resolved_method->has_vtable_index()) { |
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162 // Can occur if an interface redeclares a method of Object. |
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163 |
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164 #ifdef ASSERT |
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165 // Ensure that this is really the case. |
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166 KlassHandle object_klass = SystemDictionary::Object_klass(); |
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167 Method * object_resolved_method = object_klass()->vtable()->method_at(index); |
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168 assert(object_resolved_method->name() == resolved_method->name(), |
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169 err_msg("Object and interface method names should match at vtable index %d, %s != %s", |
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170 index, object_resolved_method->name()->as_C_string(), resolved_method->name()->as_C_string())); |
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171 assert(object_resolved_method->signature() == resolved_method->signature(), |
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172 err_msg("Object and interface method signatures should match at vtable index %d, %s != %s", |
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173 index, object_resolved_method->signature()->as_C_string(), resolved_method->signature()->as_C_string())); |
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174 #endif // ASSERT |
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175 |
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176 kind = CallInfo::vtable_call; |
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177 } else { |
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178 // A regular interface call. |
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179 kind = CallInfo::itable_call; |
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180 index = resolved_method->itable_index(); |
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181 } |
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182 assert(index == Method::nonvirtual_vtable_index || index >= 0, err_msg("bad index %d", index)); |
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183 _call_kind = kind; |
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184 _call_index = index; |
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185 _resolved_appendix = Handle(); |
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186 DEBUG_ONLY(verify()); |
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187 } |
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188 |
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189 #ifdef ASSERT |
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190 void CallInfo::verify() { |
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191 switch (call_kind()) { // the meaning and allowed value of index depends on kind |
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192 case CallInfo::direct_call: |
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193 if (_call_index == Method::nonvirtual_vtable_index) break; |
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194 // else fall through to check vtable index: |
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195 case CallInfo::vtable_call: |
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196 assert(resolved_klass()->verify_vtable_index(_call_index), ""); |
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197 break; |
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198 case CallInfo::itable_call: |
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199 assert(resolved_method()->method_holder()->verify_itable_index(_call_index), ""); |
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200 break; |
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201 case CallInfo::unknown_kind: |
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202 assert(call_kind() != CallInfo::unknown_kind, "CallInfo must be set"); |
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203 break; |
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204 default: |
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205 fatal(err_msg_res("Unexpected call kind %d", call_kind())); |
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206 } |
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207 } |
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208 #endif //ASSERT |
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209 |
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210 |
0 | 211 |
212 //------------------------------------------------------------------------------------------------------------------------ | |
213 // Klass resolution | |
214 | |
215 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { | |
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216 if (!Reflection::verify_class_access(ref_klass(), |
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217 sel_klass(), |
0 | 218 true)) { |
219 ResourceMark rm(THREAD); | |
220 Exceptions::fthrow( | |
221 THREAD_AND_LOCATION, | |
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222 vmSymbols::java_lang_IllegalAccessError(), |
0 | 223 "tried to access class %s from class %s", |
224 sel_klass->external_name(), | |
225 ref_klass->external_name() | |
226 ); | |
227 return; | |
228 } | |
229 } | |
230 | |
231 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
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232 Klass* result_oop = pool->klass_ref_at(index, CHECK); |
0 | 233 result = KlassHandle(THREAD, result_oop); |
234 } | |
235 | |
236 //------------------------------------------------------------------------------------------------------------------------ | |
237 // Method resolution | |
238 // | |
239 // According to JVM spec. $5.4.3c & $5.4.3d | |
240 | |
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241 // Look up method in klasses, including static methods |
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242 // Then look up local default methods |
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243 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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244 Method* result_oop = klass->uncached_lookup_method(name, signature); |
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245 if (result_oop == NULL) { |
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246 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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247 if (default_methods != NULL) { |
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248 result_oop = InstanceKlass::find_method(default_methods, name, signature); |
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249 } |
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250 } |
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251 |
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252 if (EnableInvokeDynamic && result_oop != NULL) { |
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253 vmIntrinsics::ID iid = result_oop->intrinsic_id(); |
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254 if (MethodHandles::is_signature_polymorphic(iid)) { |
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255 // Do not link directly to these. The VM must produce a synthetic one using lookup_polymorphic_method. |
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256 return; |
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257 } |
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258 } |
0 | 259 result = methodHandle(THREAD, result_oop); |
260 } | |
261 | |
262 // returns first instance method | |
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263 // Looks up method in classes, then looks up local default methods |
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264 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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265 Method* result_oop = klass->uncached_lookup_method(name, signature); |
0 | 266 result = methodHandle(THREAD, result_oop); |
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267 while (!result.is_null() && result->is_static() && result->method_holder()->super() != NULL) { |
6983 | 268 klass = KlassHandle(THREAD, result->method_holder()->super()); |
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269 result = methodHandle(THREAD, klass->uncached_lookup_method(name, signature)); |
0 | 270 } |
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271 |
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272 if (result.is_null()) { |
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273 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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274 if (default_methods != NULL) { |
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275 result = methodHandle(InstanceKlass::find_method(default_methods, name, signature)); |
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276 assert(result.is_null() || !result->is_static(), "static defaults not allowed"); |
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277 } |
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278 } |
0 | 279 } |
280 | |
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281 int LinkResolver::vtable_index_of_interface_method(KlassHandle klass, |
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282 methodHandle resolved_method, TRAPS) { |
0 | 283 |
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284 int vtable_index = Method::invalid_vtable_index; |
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285 Symbol* name = resolved_method->name(); |
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286 Symbol* signature = resolved_method->signature(); |
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287 |
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288 // First check in default method array |
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289 if (!resolved_method->is_abstract() && |
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290 (InstanceKlass::cast(klass())->default_methods() != NULL)) { |
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291 int index = InstanceKlass::find_method_index(InstanceKlass::cast(klass())->default_methods(), name, signature); |
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292 if (index >= 0 ) { |
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293 vtable_index = InstanceKlass::cast(klass())->default_vtable_indices()->at(index); |
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294 } |
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295 } |
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296 if (vtable_index == Method::invalid_vtable_index) { |
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297 // get vtable_index for miranda methods |
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298 ResourceMark rm(THREAD); |
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299 klassVtable *vt = InstanceKlass::cast(klass())->vtable(); |
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300 vtable_index = vt->index_of_miranda(name, signature); |
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301 } |
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302 return vtable_index; |
0 | 303 } |
304 | |
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305 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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306 InstanceKlass *ik = InstanceKlass::cast(klass()); |
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307 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature)); |
0 | 308 } |
309 | |
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310 void LinkResolver::lookup_polymorphic_method(methodHandle& result, |
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311 KlassHandle klass, Symbol* name, Symbol* full_signature, |
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312 KlassHandle current_klass, |
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313 Handle *appendix_result_or_null, |
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314 Handle *method_type_result, |
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315 TRAPS) { |
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316 vmIntrinsics::ID iid = MethodHandles::signature_polymorphic_name_id(name); |
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317 if (TraceMethodHandles) { |
9082 | 318 ResourceMark rm(THREAD); |
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319 tty->print_cr("lookup_polymorphic_method iid=%s %s.%s%s", |
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320 vmIntrinsics::name_at(iid), klass->external_name(), |
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321 name->as_C_string(), full_signature->as_C_string()); |
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322 } |
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323 if (EnableInvokeDynamic && |
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324 klass() == SystemDictionary::MethodHandle_klass() && |
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325 iid != vmIntrinsics::_none) { |
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326 if (MethodHandles::is_signature_polymorphic_intrinsic(iid)) { |
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327 // Most of these do not need an up-call to Java to resolve, so can be done anywhere. |
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328 // Do not erase last argument type (MemberName) if it is a static linkTo method. |
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329 bool keep_last_arg = MethodHandles::is_signature_polymorphic_static(iid); |
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330 TempNewSymbol basic_signature = |
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331 MethodHandles::lookup_basic_type_signature(full_signature, keep_last_arg, CHECK); |
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332 if (TraceMethodHandles) { |
9082 | 333 ResourceMark rm(THREAD); |
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334 tty->print_cr("lookup_polymorphic_method %s %s => basic %s", |
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335 name->as_C_string(), |
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336 full_signature->as_C_string(), |
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337 basic_signature->as_C_string()); |
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338 } |
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339 result = SystemDictionary::find_method_handle_intrinsic(iid, |
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340 basic_signature, |
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341 CHECK); |
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342 if (result.not_null()) { |
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343 assert(result->is_method_handle_intrinsic(), "MH.invokeBasic or MH.linkTo* intrinsic"); |
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344 assert(result->intrinsic_id() != vmIntrinsics::_invokeGeneric, "wrong place to find this"); |
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345 assert(basic_signature == result->signature(), "predict the result signature"); |
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346 if (TraceMethodHandles) { |
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347 tty->print("lookup_polymorphic_method => intrinsic "); |
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348 result->print_on(tty); |
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349 } |
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350 return; |
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351 } |
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352 } else if (iid == vmIntrinsics::_invokeGeneric |
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353 && !THREAD->is_Compiler_thread() |
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354 && appendix_result_or_null != NULL) { |
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355 // This is a method with type-checking semantics. |
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356 // We will ask Java code to spin an adapter method for it. |
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357 if (!MethodHandles::enabled()) { |
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358 // Make sure the Java part of the runtime has been booted up. |
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359 Klass* natives = SystemDictionary::MethodHandleNatives_klass(); |
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360 if (natives == NULL || InstanceKlass::cast(natives)->is_not_initialized()) { |
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361 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(), |
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362 Handle(), |
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363 Handle(), |
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364 true, |
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365 CHECK); |
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366 } |
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367 } |
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368 |
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369 Handle appendix; |
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370 Handle method_type; |
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371 result = SystemDictionary::find_method_handle_invoker(name, |
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372 full_signature, |
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373 current_klass, |
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374 &appendix, |
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375 &method_type, |
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376 CHECK); |
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377 if (TraceMethodHandles) { |
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378 tty->print("lookup_polymorphic_method => (via Java) "); |
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379 result->print_on(tty); |
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380 tty->print(" lookup_polymorphic_method => appendix = "); |
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381 if (appendix.is_null()) tty->print_cr("(none)"); |
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382 else appendix->print_on(tty); |
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383 } |
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384 if (result.not_null()) { |
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385 #ifdef ASSERT |
9082 | 386 ResourceMark rm(THREAD); |
387 | |
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388 TempNewSymbol basic_signature = |
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389 MethodHandles::lookup_basic_type_signature(full_signature, CHECK); |
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390 int actual_size_of_params = result->size_of_parameters(); |
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391 int expected_size_of_params = ArgumentSizeComputer(basic_signature).size(); |
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392 // +1 for MethodHandle.this, +1 for trailing MethodType |
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393 if (!MethodHandles::is_signature_polymorphic_static(iid)) expected_size_of_params += 1; |
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394 if (appendix.not_null()) expected_size_of_params += 1; |
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395 if (actual_size_of_params != expected_size_of_params) { |
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396 tty->print_cr("*** basic_signature=%s", basic_signature->as_C_string()); |
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397 tty->print_cr("*** result for %s: ", vmIntrinsics::name_at(iid)); |
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398 result->print(); |
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399 } |
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400 assert(actual_size_of_params == expected_size_of_params, |
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401 err_msg("%d != %d", actual_size_of_params, expected_size_of_params)); |
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402 #endif //ASSERT |
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403 |
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404 assert(appendix_result_or_null != NULL, ""); |
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405 (*appendix_result_or_null) = appendix; |
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406 (*method_type_result) = method_type; |
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407 return; |
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408 } |
710 | 409 } |
410 } | |
411 } | |
412 | |
0 | 413 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
414 KlassHandle resolved_klass, | |
415 KlassHandle sel_klass, | |
416 methodHandle sel_method, | |
417 TRAPS) { | |
418 | |
419 AccessFlags flags = sel_method->access_flags(); | |
420 | |
12945 | 421 // Special case #1: arrays always override "clone". JVMS 2.15. |
0 | 422 // If the resolved klass is an array class, and the declaring class |
423 // is java.lang.Object and the method is "clone", set the flags | |
424 // to public. | |
12945 | 425 // Special case #2: If the resolved klass is an interface, and |
426 // the declaring class is java.lang.Object, and the method is | |
427 // "clone" or "finalize", set the flags to public. If the | |
428 // resolved interface does not contain "clone" or "finalize" | |
429 // methods, the method/interface method resolution looks to | |
430 // the interface's super class, java.lang.Object. With JDK 8 | |
431 // interface accessability check requirement, special casing | |
432 // this scenario is necessary to avoid an IAE. | |
0 | 433 // |
12945 | 434 // We'll check for each method name first and then java.lang.Object |
435 // to best short-circuit out of these tests. | |
436 if (((sel_method->name() == vmSymbols::clone_name() && | |
437 (resolved_klass->oop_is_array() || resolved_klass->is_interface())) || | |
438 (sel_method->name() == vmSymbols::finalize_method_name() && | |
439 resolved_klass->is_interface())) && | |
440 sel_klass() == SystemDictionary::Object_klass()) { | |
0 | 441 // We need to change "protected" to "public". |
12945 | 442 assert(flags.is_protected(), "clone or finalize not protected?"); |
0 | 443 jint new_flags = flags.as_int(); |
444 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
445 new_flags = new_flags | JVM_ACC_PUBLIC; | |
446 flags.set_flags(new_flags); | |
447 } | |
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448 // assert(extra_arg_result_or_null != NULL, "must be able to return extra argument"); |
0 | 449 |
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450 if (!Reflection::verify_field_access(ref_klass(), |
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451 resolved_klass(), |
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452 sel_klass(), |
0 | 453 flags, |
454 true)) { | |
455 ResourceMark rm(THREAD); | |
456 Exceptions::fthrow( | |
457 THREAD_AND_LOCATION, | |
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458 vmSymbols::java_lang_IllegalAccessError(), |
0 | 459 "tried to access method %s.%s%s from class %s", |
460 sel_klass->external_name(), | |
461 sel_method->name()->as_C_string(), | |
462 sel_method->signature()->as_C_string(), | |
463 ref_klass->external_name() | |
464 ); | |
465 return; | |
466 } | |
467 } | |
468 | |
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469 void LinkResolver::resolve_method_statically(methodHandle& resolved_method, KlassHandle& resolved_klass, |
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470 Bytecodes::Code code, constantPoolHandle pool, int index, TRAPS) { |
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471 // This method is used only |
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472 // (1) in C2 from InlineTree::ok_to_inline (via ciMethod::check_call), |
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473 // and |
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474 // (2) in Bytecode_invoke::static_target |
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475 // It appears to fail when applied to an invokeinterface call site. |
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476 // FIXME: Remove this method and ciMethod::check_call; refactor to use the other LinkResolver entry points. |
0 | 477 // resolve klass |
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478 if (code == Bytecodes::_invokedynamic) { |
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479 resolved_klass = SystemDictionary::MethodHandle_klass(); |
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480 Symbol* method_name = vmSymbols::invoke_name(); |
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481 Symbol* method_signature = pool->signature_ref_at(index); |
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482 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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483 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); |
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484 return; |
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485 } |
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486 |
0 | 487 resolve_klass(resolved_klass, pool, index, CHECK); |
488 | |
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489 Symbol* method_name = pool->name_ref_at(index); |
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490 Symbol* method_signature = pool->signature_ref_at(index); |
0 | 491 KlassHandle current_klass(THREAD, pool->pool_holder()); |
492 | |
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493 if (pool->has_preresolution() |
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494 || (resolved_klass() == SystemDictionary::MethodHandle_klass() && |
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495 MethodHandles::is_signature_polymorphic_name(resolved_klass(), method_name))) { |
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496 Method* result_oop = ConstantPool::method_at_if_loaded(pool, index); |
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497 if (result_oop != NULL) { |
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498 resolved_method = methodHandle(THREAD, result_oop); |
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499 return; |
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500 } |
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501 } |
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502 |
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503 if (code == Bytecodes::_invokeinterface) { |
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504 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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505 } else if (code == Bytecodes::_invokevirtual) { |
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506 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
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507 } else { |
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508 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); |
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509 } |
0 | 510 } |
511 | |
512 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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513 Symbol* method_name, Symbol* method_signature, |
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514 KlassHandle current_klass, bool check_access, |
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515 bool require_methodref, TRAPS) { |
0 | 516 |
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517 Handle nested_exception; |
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518 |
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519 // 1. check if methodref required, that resolved_klass is not interfacemethodref |
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520 if (require_methodref && resolved_klass->is_interface()) { |
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521 ResourceMark rm(THREAD); |
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522 char buf[200]; |
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523 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", |
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524 resolved_klass()->external_name()); |
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525 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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526 } |
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527 |
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528 // 2. lookup method in resolved klass and its super klasses |
0 | 529 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
530 | |
531 if (resolved_method.is_null()) { // not found in the class hierarchy | |
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532 // 3. lookup method in all the interfaces implemented by the resolved klass |
0 | 533 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
534 | |
535 if (resolved_method.is_null()) { | |
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536 // JSR 292: see if this is an implicitly generated method MethodHandle.linkToVirtual(*...), etc |
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537 lookup_polymorphic_method(resolved_method, resolved_klass, method_name, method_signature, |
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538 current_klass, (Handle*)NULL, (Handle*)NULL, THREAD); |
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539 if (HAS_PENDING_EXCEPTION) { |
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540 nested_exception = Handle(THREAD, PENDING_EXCEPTION); |
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541 CLEAR_PENDING_EXCEPTION; |
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542 } |
710 | 543 } |
544 | |
545 if (resolved_method.is_null()) { | |
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546 // 4. method lookup failed |
0 | 547 ResourceMark rm(THREAD); |
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548 THROW_MSG_CAUSE(vmSymbols::java_lang_NoSuchMethodError(), |
6983 | 549 Method::name_and_sig_as_C_string(resolved_klass(), |
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550 method_name, |
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551 method_signature), |
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552 nested_exception); |
0 | 553 } |
554 } | |
555 | |
556 // 5. check if method is concrete | |
557 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { | |
558 ResourceMark rm(THREAD); | |
559 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 560 Method::name_and_sig_as_C_string(resolved_klass(), |
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561 method_name, |
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562 method_signature)); |
0 | 563 } |
564 | |
565 // 6. access checks, access checking may be turned off when calling from within the VM. | |
566 if (check_access) { | |
567 assert(current_klass.not_null() , "current_klass should not be null"); | |
568 | |
569 // check if method can be accessed by the referring class | |
570 check_method_accessability(current_klass, | |
571 resolved_klass, | |
572 KlassHandle(THREAD, resolved_method->method_holder()), | |
573 resolved_method, | |
574 CHECK); | |
575 | |
576 // check loader constraints | |
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577 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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578 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 579 { |
580 ResourceMark rm(THREAD); | |
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581 Symbol* failed_type_symbol = |
0 | 582 SystemDictionary::check_signature_loaders(method_signature, loader, |
583 class_loader, true, CHECK); | |
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584 if (failed_type_symbol != NULL) { |
0 | 585 const char* msg = "loader constraint violation: when resolving method" |
586 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
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587 " and the class loader (instance of %s) for the method's defining class, %s, have" |
0 | 588 " different Class objects for the type %s used in the signature"; |
6983 | 589 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 590 const char* loader1 = SystemDictionary::loader_name(loader()); |
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591 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 592 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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593 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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594 ->name()->as_C_string(); |
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595 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 596 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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597 strlen(current) + strlen(loader2) + strlen(target) + |
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598 strlen(failed_type_name) + 1; |
0 | 599 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
600 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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601 target, failed_type_name); |
0 | 602 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
603 } | |
604 } | |
605 } | |
606 } | |
607 | |
608 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
609 KlassHandle resolved_klass, | |
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610 Symbol* method_name, |
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611 Symbol* method_signature, |
0 | 612 KlassHandle current_klass, |
613 bool check_access, TRAPS) { | |
614 | |
615 // check if klass is interface | |
616 if (!resolved_klass->is_interface()) { | |
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617 ResourceMark rm(THREAD); |
0 | 618 char buf[200]; |
6983 | 619 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", resolved_klass()->external_name()); |
0 | 620 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
621 } | |
622 | |
623 // lookup method in this interface or its super, java.lang.Object | |
624 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
625 | |
626 if (resolved_method.is_null()) { | |
627 // lookup method in all the super-interfaces | |
628 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
629 if (resolved_method.is_null()) { | |
630 // no method found | |
631 ResourceMark rm(THREAD); | |
632 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 633 Method::name_and_sig_as_C_string(resolved_klass(), |
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634 method_name, |
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635 method_signature)); |
0 | 636 } |
637 } | |
638 | |
639 if (check_access) { | |
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640 // JDK8 adds non-public interface methods, and accessability check requirement |
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641 assert(current_klass.not_null() , "current_klass should not be null"); |
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642 |
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643 // check if method can be accessed by the referring class |
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644 check_method_accessability(current_klass, |
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645 resolved_klass, |
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646 KlassHandle(THREAD, resolved_method->method_holder()), |
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647 resolved_method, |
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648 CHECK); |
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649 |
0 | 650 HandleMark hm(THREAD); |
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651 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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652 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 653 { |
654 ResourceMark rm(THREAD); | |
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655 Symbol* failed_type_symbol = |
0 | 656 SystemDictionary::check_signature_loaders(method_signature, loader, |
657 class_loader, true, CHECK); | |
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658 if (failed_type_symbol != NULL) { |
0 | 659 const char* msg = "loader constraint violation: when resolving " |
660 "interface method \"%s\" the class loader (instance of %s) of the " | |
661 "current class, %s, and the class loader (instance of %s) for " | |
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662 "the method's defining class, %s, have different Class objects for the type %s " |
0 | 663 "used in the signature"; |
6983 | 664 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 665 const char* loader1 = SystemDictionary::loader_name(loader()); |
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666 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 667 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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668 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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669 ->name()->as_C_string(); |
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670 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 671 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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672 strlen(current) + strlen(loader2) + strlen(target) + |
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673 strlen(failed_type_name) + 1; |
0 | 674 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
675 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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676 target, failed_type_name); |
0 | 677 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
678 } | |
679 } | |
680 } | |
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681 |
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682 if (TraceItables && Verbose) { |
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683 ResourceMark rm(THREAD); |
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684 tty->print("invokeinterface resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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685 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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686 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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687 Method::name_and_sig_as_C_string(resolved_klass(), |
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688 resolved_method->name(), |
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689 resolved_method->signature()), |
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690 resolved_method->method_holder()->internal_name() |
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691 ); |
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692 resolved_method->access_flags().print_on(tty); |
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693 if (resolved_method->is_default_method()) { |
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694 tty->print("default"); |
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695 } |
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696 if (resolved_method->is_overpass()) { |
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697 tty->print("overpass"); |
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698 } |
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699 tty->cr(); |
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700 } |
0 | 701 } |
702 | |
703 //------------------------------------------------------------------------------------------------------------------------ | |
704 // Field resolution | |
705 | |
706 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
707 KlassHandle resolved_klass, | |
708 KlassHandle sel_klass, | |
709 fieldDescriptor& fd, | |
710 TRAPS) { | |
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711 if (!Reflection::verify_field_access(ref_klass(), |
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712 resolved_klass(), |
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713 sel_klass(), |
0 | 714 fd.access_flags(), |
715 true)) { | |
716 ResourceMark rm(THREAD); | |
717 Exceptions::fthrow( | |
718 THREAD_AND_LOCATION, | |
2177
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719 vmSymbols::java_lang_IllegalAccessError(), |
0 | 720 "tried to access field %s.%s from class %s", |
721 sel_klass->external_name(), | |
722 fd.name()->as_C_string(), | |
723 ref_klass->external_name() | |
724 ); | |
725 return; | |
726 } | |
727 } | |
728 | |
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729 void LinkResolver::resolve_field_access(fieldDescriptor& result, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { |
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730 // Load these early in case the resolve of the containing klass fails |
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731 Symbol* field = pool->name_ref_at(index); |
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732 Symbol* sig = pool->signature_ref_at(index); |
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733 |
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734 // resolve specified klass |
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735 KlassHandle resolved_klass; |
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736 resolve_klass(resolved_klass, pool, index, CHECK); |
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737 |
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738 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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739 resolve_field(result, resolved_klass, field, sig, current_klass, byte, true, true, CHECK); |
0 | 740 } |
741 | |
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742 void LinkResolver::resolve_field(fieldDescriptor& fd, KlassHandle resolved_klass, Symbol* field, Symbol* sig, |
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743 KlassHandle current_klass, Bytecodes::Code byte, bool check_access, bool initialize_class, |
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744 TRAPS) { |
0 | 745 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || |
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746 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield || |
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747 (byte == Bytecodes::_nop && !check_access), "bad field access bytecode"); |
0 | 748 |
749 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
750 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
751 | |
752 // Check if there's a resolved klass containing the field | |
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753 if (resolved_klass.is_null()) { |
0 | 754 ResourceMark rm(THREAD); |
755 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
756 } | |
757 | |
758 // Resolve instance field | |
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759 KlassHandle sel_klass(THREAD, InstanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); |
0 | 760 // check if field exists; i.e., if a klass containing the field def has been selected |
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761 if (sel_klass.is_null()) { |
0 | 762 ResourceMark rm(THREAD); |
763 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
764 } | |
765 | |
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766 if (!check_access) |
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767 // Access checking may be turned off when calling from within the VM. |
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768 return; |
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769 |
0 | 770 // check access |
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771 check_field_accessability(current_klass, resolved_klass, sel_klass, fd, CHECK); |
0 | 772 |
773 // check for errors | |
774 if (is_static != fd.is_static()) { | |
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775 ResourceMark rm(THREAD); |
0 | 776 char msg[200]; |
6983 | 777 jio_snprintf(msg, sizeof(msg), "Expected %s field %s.%s", is_static ? "static" : "non-static", resolved_klass()->external_name(), fd.name()->as_C_string()); |
0 | 778 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); |
779 } | |
780 | |
781 // Final fields can only be accessed from its own class. | |
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782 if (is_put && fd.access_flags().is_final() && sel_klass() != current_klass()) { |
0 | 783 THROW(vmSymbols::java_lang_IllegalAccessError()); |
784 } | |
785 | |
786 // initialize resolved_klass if necessary | |
787 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
788 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
789 // | |
790 // note 2: we don't want to force initialization if we are just checking | |
791 // if the field access is legal; e.g., during compilation | |
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792 if (is_static && initialize_class) { |
0 | 793 sel_klass->initialize(CHECK); |
794 } | |
795 | |
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796 if (sel_klass() != current_klass()) { |
0 | 797 HandleMark hm(THREAD); |
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798 Handle ref_loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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799 Handle sel_loader (THREAD, InstanceKlass::cast(sel_klass())->class_loader()); |
0 | 800 { |
801 ResourceMark rm(THREAD); | |
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802 Symbol* failed_type_symbol = |
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803 SystemDictionary::check_signature_loaders(sig, |
0 | 804 ref_loader, sel_loader, |
805 false, | |
806 CHECK); | |
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807 if (failed_type_symbol != NULL) { |
0 | 808 const char* msg = "loader constraint violation: when resolving field" |
809 " \"%s\" the class loader (instance of %s) of the referring class, " | |
810 "%s, and the class loader (instance of %s) for the field's resolved " | |
811 "type, %s, have different Class objects for that type"; | |
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812 char* field_name = field->as_C_string(); |
0 | 813 const char* loader1 = SystemDictionary::loader_name(ref_loader()); |
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814 char* sel = InstanceKlass::cast(sel_klass())->name()->as_C_string(); |
0 | 815 const char* loader2 = SystemDictionary::loader_name(sel_loader()); |
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816 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 817 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + |
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818 strlen(sel) + strlen(loader2) + strlen(failed_type_name) + 1; |
0 | 819 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
820 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
821 failed_type_name); | |
822 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
823 } | |
824 } | |
825 } | |
826 | |
827 // return information. note that the klass is set to the actual klass containing the | |
828 // field, otherwise access of static fields in superclasses will not work. | |
829 } | |
830 | |
831 | |
832 //------------------------------------------------------------------------------------------------------------------------ | |
833 // Invoke resolution | |
834 // | |
835 // Naming conventions: | |
836 // | |
837 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
838 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
839 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
840 // recv_klass the receiver klass | |
841 | |
842 | |
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843 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, |
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844 Symbol* method_signature, KlassHandle current_klass, |
0 | 845 bool check_access, bool initialize_class, TRAPS) { |
846 methodHandle resolved_method; | |
847 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
6983 | 848 resolved_klass = KlassHandle(THREAD, resolved_method->method_holder()); |
0 | 849 |
850 // Initialize klass (this should only happen if everything is ok) | |
851 if (initialize_class && resolved_klass->should_be_initialized()) { | |
852 resolved_klass->initialize(CHECK); | |
853 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
854 } | |
855 | |
856 // setup result | |
857 result.set_static(resolved_klass, resolved_method, CHECK); | |
858 } | |
859 | |
860 // throws linktime exceptions | |
861 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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862 Symbol* method_name, Symbol* method_signature, |
0 | 863 KlassHandle current_klass, bool check_access, TRAPS) { |
864 | |
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865 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); |
0 | 866 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); |
867 | |
868 // check if static | |
869 if (!resolved_method->is_static()) { | |
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870 ResourceMark rm(THREAD); |
0 | 871 char buf[200]; |
6983 | 872 jio_snprintf(buf, sizeof(buf), "Expected static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 873 resolved_method->name(), |
874 resolved_method->signature())); | |
875 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
876 } | |
877 } | |
878 | |
879 | |
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880 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, |
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881 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 882 methodHandle resolved_method; |
883 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
884 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
885 } | |
886 | |
887 // throws linktime exceptions | |
888 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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889 Symbol* method_name, Symbol* method_signature, |
0 | 890 KlassHandle current_klass, bool check_access, TRAPS) { |
891 | |
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892 // Invokespecial is called for multiple special reasons: |
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893 // <init> |
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894 // local private method invocation, for classes and interfaces |
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895 // superclass.method, which can also resolve to a default method |
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896 // and the selected method is recalculated relative to the direct superclass |
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897 // superinterface.method, which explicitly does not check shadowing |
6934 | 898 |
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899 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); |
0 | 900 |
901 // check if method name is <init>, that it is found in same klass as static type | |
902 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
903 resolved_method->method_holder() != resolved_klass()) { | |
904 ResourceMark rm(THREAD); | |
905 Exceptions::fthrow( | |
906 THREAD_AND_LOCATION, | |
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907 vmSymbols::java_lang_NoSuchMethodError(), |
0 | 908 "%s: method %s%s not found", |
909 resolved_klass->external_name(), | |
910 resolved_method->name()->as_C_string(), | |
911 resolved_method->signature()->as_C_string() | |
912 ); | |
913 return; | |
914 } | |
915 | |
916 // check if not static | |
917 if (resolved_method->is_static()) { | |
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918 ResourceMark rm(THREAD); |
0 | 919 char buf[200]; |
920 jio_snprintf(buf, sizeof(buf), | |
921 "Expecting non-static method %s", | |
6983 | 922 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 923 resolved_method->name(), |
924 resolved_method->signature())); | |
925 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
926 } | |
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927 |
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928 if (TraceItables && Verbose) { |
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929 ResourceMark rm(THREAD); |
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930 tty->print("invokespecial resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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931 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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932 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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933 Method::name_and_sig_as_C_string(resolved_klass(), |
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934 resolved_method->name(), |
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935 resolved_method->signature()), |
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936 resolved_method->method_holder()->internal_name() |
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937 ); |
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938 resolved_method->access_flags().print_on(tty); |
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939 if (resolved_method->is_default_method()) { |
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940 tty->print("default"); |
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941 } |
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942 if (resolved_method->is_overpass()) { |
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943 tty->print("overpass"); |
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944 } |
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945 tty->cr(); |
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946 } |
0 | 947 } |
948 | |
949 // throws runtime exceptions | |
950 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
951 KlassHandle current_klass, bool check_access, TRAPS) { | |
952 | |
953 // resolved method is selected method unless we have an old-style lookup | |
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954 // for a superclass method |
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955 // Invokespecial for a superinterface, resolved method is selected method, |
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956 // no checks for shadowing |
0 | 957 methodHandle sel_method(THREAD, resolved_method()); |
958 | |
959 // check if this is an old-style super call and do a new lookup if so | |
960 { KlassHandle method_klass = KlassHandle(THREAD, | |
961 resolved_method->method_holder()); | |
962 | |
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963 if (check_access && |
0 | 964 // a) check if ACC_SUPER flag is set for the current class |
8702 | 965 (current_klass->is_super() || !AllowNonVirtualCalls) && |
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966 // b) check if the class of the resolved_klass is a superclass |
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967 // (not supertype in order to exclude interface classes) of the current class. |
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968 // This check is not performed for super.invoke for interface methods |
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969 // in super interfaces. |
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970 current_klass->is_subclass_of(resolved_klass()) && |
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971 current_klass() != resolved_klass() && |
0 | 972 // c) check if the method is not <init> |
973 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
974 // Lookup super method | |
975 KlassHandle super_klass(THREAD, current_klass->super()); | |
976 lookup_instance_method_in_klasses(sel_method, super_klass, | |
2177
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977 resolved_method->name(), |
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978 resolved_method->signature(), CHECK); |
0 | 979 // check if found |
980 if (sel_method.is_null()) { | |
981 ResourceMark rm(THREAD); | |
982 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 983 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 984 resolved_method->name(), |
985 resolved_method->signature())); | |
986 } | |
987 } | |
988 } | |
989 | |
990 // check if not static | |
991 if (sel_method->is_static()) { | |
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992 ResourceMark rm(THREAD); |
0 | 993 char buf[200]; |
6983 | 994 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 995 resolved_method->name(), |
996 resolved_method->signature())); | |
997 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
998 } | |
999 | |
1000 // check if abstract | |
1001 if (sel_method->is_abstract()) { | |
1002 ResourceMark rm(THREAD); | |
1003 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1004 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1005 sel_method->name(), |
1006 sel_method->signature())); | |
1007 } | |
1008 | |
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1009 if (TraceItables && Verbose) { |
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1010 ResourceMark rm(THREAD); |
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1011 tty->print("invokespecial selected method: resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1012 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1013 Method::name_and_sig_as_C_string(resolved_klass(), |
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1014 sel_method->name(), |
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1015 sel_method->signature()), |
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1016 sel_method->method_holder()->internal_name() |
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1017 ); |
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1018 sel_method->access_flags().print_on(tty); |
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1019 if (sel_method->is_default_method()) { |
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1020 tty->print("default"); |
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1021 } |
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1022 if (sel_method->is_overpass()) { |
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1023 tty->print("overpass"); |
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1024 } |
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1025 tty->cr(); |
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1026 } |
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1027 |
0 | 1028 // setup result |
1029 result.set_static(resolved_klass, sel_method, CHECK); | |
1030 } | |
1031 | |
1032 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
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1033 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1034 bool check_access, bool check_null_and_abstract, TRAPS) { |
1035 methodHandle resolved_method; | |
1036 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1037 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
1038 } | |
1039 | |
1040 // throws linktime exceptions | |
1041 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
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1042 Symbol* method_name, Symbol* method_signature, |
0 | 1043 KlassHandle current_klass, bool check_access, TRAPS) { |
1044 // normal method resolution | |
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1045 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); |
0 | 1046 |
1047 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1048 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1049 | |
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1050 // check if private interface method |
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1051 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
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1052 ResourceMark rm(THREAD); |
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1053 char buf[200]; |
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1054 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokevirtual: method %s, caller-class:%s", |
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1055 Method::name_and_sig_as_C_string(resolved_klass(), |
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1056 resolved_method->name(), |
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1057 resolved_method->signature()), |
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1058 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name())); |
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1059 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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1060 } |
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1061 |
0 | 1062 // check if not static |
1063 if (resolved_method->is_static()) { | |
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1064 ResourceMark rm(THREAD); |
0 | 1065 char buf[200]; |
6983 | 1066 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1067 resolved_method->name(), |
1068 resolved_method->signature())); | |
1069 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
1070 } | |
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1071 |
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1072 if (PrintVtables && Verbose) { |
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1073 ResourceMark rm(THREAD); |
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1074 tty->print("invokevirtual resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1075 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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1076 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1077 Method::name_and_sig_as_C_string(resolved_klass(), |
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1078 resolved_method->name(), |
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1079 resolved_method->signature()), |
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1080 resolved_method->method_holder()->internal_name() |
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1081 ); |
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1082 resolved_method->access_flags().print_on(tty); |
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1083 if (resolved_method->is_default_method()) { |
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1084 tty->print("default"); |
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1085 } |
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1086 if (resolved_method->is_overpass()) { |
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1087 tty->print("overpass"); |
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1088 } |
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1089 tty->cr(); |
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1090 } |
0 | 1091 } |
1092 | |
1093 // throws runtime exceptions | |
1094 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
1095 methodHandle resolved_method, | |
1096 KlassHandle resolved_klass, | |
1097 Handle recv, | |
1098 KlassHandle recv_klass, | |
1099 bool check_null_and_abstract, | |
1100 TRAPS) { | |
1101 | |
1102 // setup default return values | |
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1103 int vtable_index = Method::invalid_vtable_index; |
0 | 1104 methodHandle selected_method; |
1105 | |
1106 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
1107 | |
1108 // runtime method resolution | |
1109 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
1110 THROW(vmSymbols::java_lang_NullPointerException()); | |
1111 } | |
1112 | |
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1113 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the Method*'s |
0 | 1114 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since |
1115 // a missing receiver might result in a bogus lookup. | |
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1116 assert(resolved_method->method_holder()->is_linked(), "must be linked"); |
0 | 1117 |
1118 // do lookup based on receiver klass using the vtable index | |
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1119 if (resolved_method->method_holder()->is_interface()) { // miranda method |
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1120 vtable_index = vtable_index_of_interface_method(resolved_klass, |
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1121 resolved_method, CHECK); |
0 | 1122 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); |
1123 | |
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1124 InstanceKlass* inst = InstanceKlass::cast(recv_klass()); |
0 | 1125 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1126 } else { | |
1127 // at this point we are sure that resolved_method is virtual and not | |
1128 // a miranda method; therefore, it must have a valid vtable index. | |
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1129 assert(!resolved_method->has_itable_index(), ""); |
0 | 1130 vtable_index = resolved_method->vtable_index(); |
1131 // We could get a negative vtable_index for final methods, | |
1132 // because as an optimization they are they are never put in the vtable, | |
1133 // unless they override an existing method. | |
1134 // If we do get a negative, it means the resolved method is the the selected | |
1135 // method, and it can never be changed by an override. | |
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1136 if (vtable_index == Method::nonvirtual_vtable_index) { |
0 | 1137 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); |
1138 selected_method = resolved_method; | |
1139 } else { | |
1140 // recv_klass might be an arrayKlassOop but all vtables start at | |
1141 // the same place. The cast is to avoid virtual call and assertion. | |
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1142 InstanceKlass* inst = (InstanceKlass*)recv_klass(); |
0 | 1143 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1144 } | |
1145 } | |
1146 | |
1147 // check if method exists | |
1148 if (selected_method.is_null()) { | |
1149 ResourceMark rm(THREAD); | |
1150 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1151 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1152 resolved_method->name(), |
1153 resolved_method->signature())); | |
1154 } | |
1155 | |
1156 // check if abstract | |
1157 if (check_null_and_abstract && selected_method->is_abstract()) { | |
1158 ResourceMark rm(THREAD); | |
1159 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1160 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1161 selected_method->name(), |
1162 selected_method->signature())); | |
1163 } | |
1164 | |
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1165 if (PrintVtables && Verbose) { |
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1166 ResourceMark rm(THREAD); |
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1167 tty->print("invokevirtual selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, vtable_index:%d, access_flags: ", |
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1168 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
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|
1169 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1170 Method::name_and_sig_as_C_string(resolved_klass(), |
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|
1171 resolved_method->name(), |
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|
1172 resolved_method->signature()), |
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1173 selected_method->method_holder()->internal_name(), |
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|
1174 vtable_index |
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|
1175 ); |
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|
1176 selected_method->access_flags().print_on(tty); |
12823
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|
1177 if (selected_method->is_default_method()) { |
12318
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|
1178 tty->print("default"); |
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|
1179 } |
12823
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|
1180 if (selected_method->is_overpass()) { |
12318
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|
1181 tty->print("overpass"); |
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|
1182 } |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1183 tty->cr(); |
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|
1184 } |
0 | 1185 // setup result |
1186 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
1187 } | |
1188 | |
1189 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
2177
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|
1190 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1191 bool check_access, bool check_null_and_abstract, TRAPS) { |
1192 methodHandle resolved_method; | |
1193 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1194 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
1195 } | |
1196 | |
1197 // throws linktime exceptions | |
2177
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|
1198 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, |
3582bf76420e
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|
1199 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 1200 // normal interface method resolution |
1201 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1202 | |
1203 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1204 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1205 } | |
1206 | |
1207 // throws runtime exceptions | |
1208 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
1209 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
1210 // check if receiver exists | |
1211 if (check_null_and_abstract && recv.is_null()) { | |
1212 THROW(vmSymbols::java_lang_NullPointerException()); | |
1213 } | |
1214 | |
12318
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|
1215 // check if private interface method |
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1216 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
36b97be47bde
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|
1217 ResourceMark rm(THREAD); |
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|
1218 char buf[200]; |
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|
1219 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokeinterface: method %s", |
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|
1220 Method::name_and_sig_as_C_string(resolved_klass(), |
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|
1221 resolved_method->name(), |
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|
1222 resolved_method->signature())); |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1223 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1224 } |
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|
1225 |
0 | 1226 // check if receiver klass implements the resolved interface |
1227 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
3324
acf5e660c71a
6728025: LinkResolver is missing some ResourceMarks
jcoomes
parents:
2460
diff
changeset
|
1228 ResourceMark rm(THREAD); |
0 | 1229 char buf[200]; |
1230 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
6983 | 1231 recv_klass()->external_name(), |
1232 resolved_klass()->external_name()); | |
0 | 1233 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
1234 } | |
1235 // do lookup based on receiver klass | |
1236 methodHandle sel_method; | |
1237 lookup_instance_method_in_klasses(sel_method, recv_klass, | |
2177
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|
1238 resolved_method->name(), |
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|
1239 resolved_method->signature(), CHECK); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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|
1240 if (sel_method.is_null() && !check_null_and_abstract) { |
b2e698d2276c
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|
1241 // In theory this is a harmless placeholder value, but |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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|
1242 // in practice leaving in null affects the nsk default method tests. |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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|
1243 // This needs further study. |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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|
1244 sel_method = resolved_method; |
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8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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|
1245 } |
0 | 1246 // check if method exists |
1247 if (sel_method.is_null()) { | |
1248 ResourceMark rm(THREAD); | |
1249 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1250 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1251 resolved_method->name(), |
1252 resolved_method->signature())); | |
1253 } | |
10128
41ed397cc0cd
8006267: InterfaceMethod_ref should allow invokestatic and invokespecial
bharadwaj
parents:
9082
diff
changeset
|
1254 // check access |
12318
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|
1255 // Throw Illegal Access Error if sel_method is not public. |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1256 if (!sel_method->is_public()) { |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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changeset
|
1257 ResourceMark rm(THREAD); |
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diff
changeset
|
1258 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), |
36b97be47bde
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changeset
|
1259 Method::name_and_sig_as_C_string(recv_klass(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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changeset
|
1260 sel_method->name(), |
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changeset
|
1261 sel_method->signature())); |
10128
41ed397cc0cd
8006267: InterfaceMethod_ref should allow invokestatic and invokespecial
bharadwaj
parents:
9082
diff
changeset
|
1262 } |
0 | 1263 // check if abstract |
1264 if (check_null_and_abstract && sel_method->is_abstract()) { | |
1265 ResourceMark rm(THREAD); | |
1266 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1267 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1268 sel_method->name(), |
1269 sel_method->signature())); | |
1270 } | |
1271 // setup result | |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
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10128
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|
1272 if (!resolved_method->has_itable_index()) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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diff
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|
1273 int vtable_index = resolved_method->vtable_index(); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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diff
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|
1274 assert(vtable_index == sel_method->vtable_index(), "sanity check"); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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10128
diff
changeset
|
1275 result.set_virtual(resolved_klass, recv_klass, resolved_method, sel_method, vtable_index, CHECK); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1276 return; |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1277 } |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
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10128
diff
changeset
|
1278 int itable_index = resolved_method()->itable_index(); |
12318
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1279 |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
changeset
|
1280 if (TraceItables && Verbose) { |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
changeset
|
1281 ResourceMark rm(THREAD); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
changeset
|
1282 tty->print("invokeinterface selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
changeset
|
1283 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1284 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
changeset
|
1285 Method::name_and_sig_as_C_string(resolved_klass(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1286 resolved_method->name(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
12316
diff
changeset
|
1287 resolved_method->signature()), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1288 sel_method->method_holder()->internal_name() |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1289 ); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1290 sel_method->access_flags().print_on(tty); |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12318
diff
changeset
|
1291 if (sel_method->is_default_method()) { |
12318
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
12316
diff
changeset
|
1292 tty->print("default"); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1293 } |
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
12318
diff
changeset
|
1294 if (sel_method->is_overpass()) { |
12318
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
12316
diff
changeset
|
1295 tty->print("overpass"); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1296 } |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1297 tty->cr(); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1298 } |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
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diff
changeset
|
1299 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, itable_index, CHECK); |
0 | 1300 } |
1301 | |
1302 | |
1303 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
1304 KlassHandle resolved_klass, | |
2177
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diff
changeset
|
1305 Symbol* method_name, |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
1306 Symbol* method_signature, |
0 | 1307 KlassHandle current_klass, |
1308 bool check_access) { | |
1309 EXCEPTION_MARK; | |
1310 methodHandle method_result; | |
1311 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1312 if (HAS_PENDING_EXCEPTION) { | |
1313 CLEAR_PENDING_EXCEPTION; | |
1314 return methodHandle(); | |
1315 } else { | |
1316 return method_result; | |
1317 } | |
1318 } | |
1319 | |
1320 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
1321 KlassHandle resolved_klass, | |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
changeset
|
1322 Symbol* method_name, |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
1323 Symbol* method_signature, |
0 | 1324 KlassHandle current_klass, |
1325 bool check_access) { | |
1326 EXCEPTION_MARK; | |
1327 methodHandle method_result; | |
1328 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1329 if (HAS_PENDING_EXCEPTION) { | |
1330 CLEAR_PENDING_EXCEPTION; | |
1331 return methodHandle(); | |
1332 } else { | |
1333 return method_result; | |
1334 } | |
1335 } | |
1336 | |
1337 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
1338 KlassHandle receiver_klass, | |
1339 KlassHandle resolved_klass, | |
2177
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coleenp
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diff
changeset
|
1340 Symbol* name, |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
1341 Symbol* signature, |
0 | 1342 KlassHandle current_klass) { |
1343 EXCEPTION_MARK; | |
1344 CallInfo info; | |
1345 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1346 if (HAS_PENDING_EXCEPTION) { | |
1347 CLEAR_PENDING_EXCEPTION; | |
1348 return methodHandle(); | |
1349 } | |
1350 return info.selected_method(); | |
1351 } | |
1352 | |
1353 methodHandle LinkResolver::resolve_interface_call_or_null( | |
1354 KlassHandle receiver_klass, | |
1355 KlassHandle resolved_klass, | |
2177
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diff
changeset
|
1356 Symbol* name, |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
changeset
|
1357 Symbol* signature, |
0 | 1358 KlassHandle current_klass) { |
1359 EXCEPTION_MARK; | |
1360 CallInfo info; | |
1361 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1362 if (HAS_PENDING_EXCEPTION) { | |
1363 CLEAR_PENDING_EXCEPTION; | |
1364 return methodHandle(); | |
1365 } | |
1366 return info.selected_method(); | |
1367 } | |
1368 | |
1369 int LinkResolver::resolve_virtual_vtable_index( | |
1370 KlassHandle receiver_klass, | |
1371 KlassHandle resolved_klass, | |
2177
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diff
changeset
|
1372 Symbol* name, |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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1972
diff
changeset
|
1373 Symbol* signature, |
0 | 1374 KlassHandle current_klass) { |
1375 EXCEPTION_MARK; | |
1376 CallInfo info; | |
1377 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1378 if (HAS_PENDING_EXCEPTION) { | |
1379 CLEAR_PENDING_EXCEPTION; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
1380 return Method::invalid_vtable_index; |
0 | 1381 } |
1382 return info.vtable_index(); | |
1383 } | |
1384 | |
1385 methodHandle LinkResolver::resolve_static_call_or_null( | |
1386 KlassHandle resolved_klass, | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
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diff
changeset
|
1387 Symbol* name, |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
1388 Symbol* signature, |
0 | 1389 KlassHandle current_klass) { |
1390 EXCEPTION_MARK; | |
1391 CallInfo info; | |
1392 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1393 if (HAS_PENDING_EXCEPTION) { | |
1394 CLEAR_PENDING_EXCEPTION; | |
1395 return methodHandle(); | |
1396 } | |
1397 return info.selected_method(); | |
1398 } | |
1399 | |
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1400 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature, |
0 | 1401 KlassHandle current_klass) { |
1402 EXCEPTION_MARK; | |
1403 CallInfo info; | |
1404 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
1405 if (HAS_PENDING_EXCEPTION) { | |
1406 CLEAR_PENDING_EXCEPTION; | |
1407 return methodHandle(); | |
1408 } | |
1409 return info.selected_method(); | |
1410 } | |
1411 | |
1412 | |
1413 | |
1414 //------------------------------------------------------------------------------------------------------------------------ | |
1415 // ConstantPool entries | |
1416 | |
1417 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
1418 switch (byte) { | |
1419 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
1420 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
1421 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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1422 case Bytecodes::_invokehandle : resolve_invokehandle (result, pool, index, CHECK); break; |
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1423 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
0 | 1424 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
1425 } | |
1426 return; | |
1427 } | |
1428 | |
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1429 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, |
0 | 1430 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { |
1431 // resolve klass | |
1432 resolve_klass(resolved_klass, pool, index, CHECK); | |
1433 | |
1434 // Get name, signature, and static klass | |
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1435 method_name = pool->name_ref_at(index); |
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1436 method_signature = pool->signature_ref_at(index); |
0 | 1437 current_klass = KlassHandle(THREAD, pool->pool_holder()); |
1438 } | |
1439 | |
1440 | |
1441 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1442 KlassHandle resolved_klass; | |
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1443 Symbol* method_name = NULL; |
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1444 Symbol* method_signature = NULL; |
0 | 1445 KlassHandle current_klass; |
1446 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1447 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1448 } | |
1449 | |
1450 | |
1451 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1452 KlassHandle resolved_klass; | |
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1453 Symbol* method_name = NULL; |
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1454 Symbol* method_signature = NULL; |
0 | 1455 KlassHandle current_klass; |
1456 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1457 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
1458 } | |
1459 | |
1460 | |
1461 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
1462 constantPoolHandle pool, int index, | |
1463 TRAPS) { | |
1464 | |
1465 KlassHandle resolved_klass; | |
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1466 Symbol* method_name = NULL; |
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1467 Symbol* method_signature = NULL; |
0 | 1468 KlassHandle current_klass; |
1469 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1470 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1471 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1472 } | |
1473 | |
1474 | |
1475 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
1476 KlassHandle resolved_klass; | |
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1477 Symbol* method_name = NULL; |
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1478 Symbol* method_signature = NULL; |
0 | 1479 KlassHandle current_klass; |
1480 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1481 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1482 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1483 } | |
1484 | |
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1485 |
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1486 void LinkResolver::resolve_invokehandle(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1487 assert(EnableInvokeDynamic, ""); |
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1488 // This guy is reached from InterpreterRuntime::resolve_invokehandle. |
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1489 KlassHandle resolved_klass; |
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1490 Symbol* method_name = NULL; |
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1491 Symbol* method_signature = NULL; |
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1492 KlassHandle current_klass; |
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1493 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
9082 | 1494 if (TraceMethodHandles) { |
1495 ResourceMark rm(THREAD); | |
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1496 tty->print_cr("resolve_invokehandle %s %s", method_name->as_C_string(), method_signature->as_C_string()); |
9082 | 1497 } |
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1498 resolve_handle_call(result, resolved_klass, method_name, method_signature, current_klass, CHECK); |
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1499 } |
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1500 |
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1501 void LinkResolver::resolve_handle_call(CallInfo& result, KlassHandle resolved_klass, |
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1502 Symbol* method_name, Symbol* method_signature, |
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1503 KlassHandle current_klass, |
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1504 TRAPS) { |
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1505 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) or similar |
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1506 assert(resolved_klass() == SystemDictionary::MethodHandle_klass(), ""); |
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1507 assert(MethodHandles::is_signature_polymorphic_name(method_name), ""); |
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1508 methodHandle resolved_method; |
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1509 Handle resolved_appendix; |
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1510 Handle resolved_method_type; |
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1511 lookup_polymorphic_method(resolved_method, resolved_klass, |
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1512 method_name, method_signature, |
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1513 current_klass, &resolved_appendix, &resolved_method_type, CHECK); |
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1514 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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1515 } |
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1516 |
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1517 |
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1518 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1519 assert(EnableInvokeDynamic, ""); |
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1520 |
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1521 //resolve_pool(<resolved_klass>, method_name, method_signature, current_klass, pool, index, CHECK); |
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1522 Symbol* method_name = pool->name_ref_at(index); |
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1523 Symbol* method_signature = pool->signature_ref_at(index); |
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1524 KlassHandle current_klass = KlassHandle(THREAD, pool->pool_holder()); |
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1525 |
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1526 // Resolve the bootstrap specifier (BSM + optional arguments). |
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1527 Handle bootstrap_specifier; |
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1528 // Check if CallSite has been bound already: |
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1529 ConstantPoolCacheEntry* cpce = pool->invokedynamic_cp_cache_entry_at(index); |
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1530 if (cpce->is_f1_null()) { |
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1531 int pool_index = cpce->constant_pool_index(); |
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1532 oop bsm_info = pool->resolve_bootstrap_specifier_at(pool_index, CHECK); |
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1533 assert(bsm_info != NULL, ""); |
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1534 // FIXME: Cache this once per BootstrapMethods entry, not once per CONSTANT_InvokeDynamic. |
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1535 bootstrap_specifier = Handle(THREAD, bsm_info); |
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1536 } |
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1537 if (!cpce->is_f1_null()) { |
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1538 methodHandle method( THREAD, cpce->f1_as_method()); |
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1539 Handle appendix( THREAD, cpce->appendix_if_resolved(pool)); |
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1540 Handle method_type(THREAD, cpce->method_type_if_resolved(pool)); |
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1541 result.set_handle(method, appendix, method_type, CHECK); |
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1542 return; |
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1543 } |
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1544 |
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1545 if (TraceMethodHandles) { |
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1546 ResourceMark rm(THREAD); |
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1547 tty->print_cr("resolve_invokedynamic #%d %s %s", |
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1548 ConstantPool::decode_invokedynamic_index(index), |
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1549 method_name->as_C_string(), method_signature->as_C_string()); |
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1550 tty->print(" BSM info: "); bootstrap_specifier->print(); |
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1551 } |
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1552 |
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1553 resolve_dynamic_call(result, bootstrap_specifier, method_name, method_signature, current_klass, CHECK); |
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1554 } |
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1555 |
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1556 void LinkResolver::resolve_dynamic_call(CallInfo& result, |
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1557 Handle bootstrap_specifier, |
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1558 Symbol* method_name, Symbol* method_signature, |
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1559 KlassHandle current_klass, |
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1560 TRAPS) { |
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1561 // JSR 292: this must resolve to an implicitly generated method MH.linkToCallSite(*...) |
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1562 // The appendix argument is likely to be a freshly-created CallSite. |
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1563 Handle resolved_appendix; |
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1564 Handle resolved_method_type; |
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1565 methodHandle resolved_method = |
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1566 SystemDictionary::find_dynamic_call_site_invoker(current_klass, |
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1567 bootstrap_specifier, |
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1568 method_name, method_signature, |
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1569 &resolved_appendix, |
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1570 &resolved_method_type, |
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1571 THREAD); |
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1572 if (HAS_PENDING_EXCEPTION) { |
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1573 if (TraceMethodHandles) { |
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1574 tty->print_cr("invokedynamic throws BSME for "INTPTR_FORMAT, (void *)PENDING_EXCEPTION); |
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1575 PENDING_EXCEPTION->print(); |
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1576 } |
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1577 if (PENDING_EXCEPTION->is_a(SystemDictionary::BootstrapMethodError_klass())) { |
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1578 // throw these guys, since they are already wrapped |
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1579 return; |
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1580 } |
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1581 if (!PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) { |
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1582 // intercept only LinkageErrors which might have failed to wrap |
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1583 return; |
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1584 } |
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1585 // See the "Linking Exceptions" section for the invokedynamic instruction in the JVMS. |
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1586 Handle nested_exception(THREAD, PENDING_EXCEPTION); |
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1587 CLEAR_PENDING_EXCEPTION; |
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1588 THROW_CAUSE(vmSymbols::java_lang_BootstrapMethodError(), nested_exception) |
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1589 } |
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1590 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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1591 } |
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1592 |
0 | 1593 //------------------------------------------------------------------------------------------------------------------------ |
1594 #ifndef PRODUCT | |
1595 | |
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1596 void CallInfo::print() { |
0 | 1597 ResourceMark rm; |
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1598 const char* kindstr = "unknown"; |
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1599 switch (_call_kind) { |
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1600 case direct_call: kindstr = "direct"; break; |
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1601 case vtable_call: kindstr = "vtable"; break; |
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1602 case itable_call: kindstr = "itable"; break; |
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1603 } |
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1604 tty->print_cr("Call %s@%d %s", kindstr, _call_index, |
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1605 _resolved_method.is_null() ? "(none)" : _resolved_method->name_and_sig_as_C_string()); |
0 | 1606 } |
1607 | |
1608 #endif |